题目
An analyst observes that the closing prices of a stock during a week are $33, $43, $45, $48, $46. On the corresponding days the S&P 500 closed at 1150, 1125, 1140, 1160, and 1170. Based on this data the covariance of the stock with the market is CLOSEST to:
选项
A.15.8
B.22.5
C.37.4
D.54.4
答案
B
解析
本题解析如下：「huixue_img/importSubject/1564169386321907712.png」